Some issues, otherwise ok

I had some issues getting this plugin to work because the plugin was throwing errors. Support blamed other plugins, even though trace showed that it was their own plugin that was throwing the errors. When I fixed the errors in their plugin, code ran fine. When I suggested how to fix the problem, they still claimed that it was not their problem.

Also unable to test some valid scenarios in the sandbox such as customers ordering products without logging in because plugin requires an admin to be logged in when using the sandbox for testing. I had to test these scenarios on a live Square account, which is never a good idea.

Otherwise, plugin works ok so far.